book Maths Puzzle Numerical Ability

x+2x^2/x+2

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Evelyn intends to give her 12 good friends a treat at the school canteen. Her friends can have either a bowl of noodles or a plate of chicken rice. A bowl of noodles costs $1.20 wh Two trains start form the same place at the same time heading in directly opposite directions. One train averages 65 mph, and the other train averages 75 mph. After how long will